Photomechanical printing machine



y 1934. H. c. JONES PHOTOMEQHANICAL PRINTING MACHINE Filed March 4, 1930 6 Sheets-Sheet INVENTOR flarrylifaflep".

BY I w 11;}? AT ISLNEY May 22, 1934.

I H. C, JONES PHOTOMECHANICAL PRINTING MACHINE Filed March 4; 1950 6 Sheets-Sheet 2 INVENTOR ffarjy (7.70am? BY l Ila ATTORNEY y 1934. H. c. JONES 1,959,799

PHOTOMECHANICAL PRINTING MACHINE Filed March 4, 1930 6 Sheets-Sheet 4 MIN- HH INVENTOR fiazzyffazwpt BY Jul S A dRNEY May 22, 1934.

H. c. JONES 1,959,789 PHOTOMECHANIGAL PRINTING MACHINE Filed March 4, 1930 6 Sheets-Sheet 5 .IIIHHHH lllifir.

ENVENTO'R Early LTJazzasi .htp ATTEJRNEY May 22, 1934. H. c. JONES PHOTOMECHANICAL PRINTING MACHINE Filed March 4, 1930 6 Sheets-Sheet 6 gain 192 42 .38 1&8

INVENTOR Hear wan 124$ LULZZQ. Jul s ATTORNEY Patented May 22, 1934 1,959,789

UNITED STATES PATENT OFFICE 1,959,789 morormcnmoar, ram'rmo MACHINE Harry (L-Jones, New York, N. Y. Application March 4, 1930, Serial No. 433,002 22 claims. (Cl. 95-76) This invention relates to photographic ma same looking from the right hand, operative chines with special reference to the arrangement side. and operation of the positive and negative carry- Figure 3 is a similar view of parts of the same, J ing frames used therein, reference being made to drawn to an enlarged scale. a divisional application filed, February 24, 1931, Figure 4 is a partial front elevational and sec- Serial Number 517,724. tional view of the brake, clutch and control de- Inthis application the term negative","as used vice, the section being taken on line 4-4 of v throughout, is understood to refer to either rigid Figure 3. r or flexible plates, filmaetc. made of any trans- Figure 5 is a fragmentary side view of the parent or translucent substance as glass, cellufinal adjusting device for vertical movementof loid or analogous material, paper and textile fabthe plate holder. rics, treated to permit the passage of actinic light, Figure 6 is a fragmentary sectional view of the and bearing images or legends, inscribed manuplate frame locking device, taken on line 8-6 of ally or mechanically, imprinted photographically Figure 2. or otherwise, of any object or matter, or having Figure 7is a transverse sectional view taken 10- the same attached in such manner as to be reon line 7-7 of Figure 6. produced by photo-printing. Figure 8 is an end view of the same.

In machines of this character it is important Figure 9 is a side elevational view, partially in the production of accurate work that the in section, of the final adjusting device for horiplate holders are moved easily, with a minimum zontal movement of the plate holder. of physical effort on part of the operator; that Figure 10 is a partial end, partial transverse all movements be accomplished smoothly without sectional view of the same. jar, vibration or shock, and particularly, in per- Figure 11 is aview similar to Figure 4 but showfect unifbl'mity w h r p t0 S r h line ing a simplified form of the clutch mechanism. movement in which the planes of the plates are Figure 12 i a, similar view showing a further maintained in exact parallelism throughout any m dification of the construction. c a in po tions, hor ontal or ver to Figure-13 is'a transverse sectional view taken whichgthey ay e su i ctedv on line 13-13 of Figure 12. j It is equally important that the transmission Figure 4 is r tary side elevational 30 of motion be exact and alike at all points in the View showing amodmcaflon 1' th b am raising frames, and that movements in any direction he and lowering means correctly indexed so that any possible relative Referring particularly to figures 1 and 2 of th Position of the frames can be accurately repm drawings,it will be seen that the machine includes duceda pair of spaced uprights 15-15 connected rigidly c3 It is an obJect of the invention to provide a at their upper ends by a beam 16 and-bolted t; bed plate flame having Oscillatable supports tween rearward extensions of the uprights, near whereby it may be moved forward and back while their lower ends is a fixed base 17 having com in truly; verticgl 3 no ig or S vergent legs terminating in feet 17' in the plane movemen occurring uring mo on, means e g 4'3 also provided for locking this frame in vertical gig g li i 339 but rema'lrldly thereof 1 Position when g fi supporting the A horizontal beam 18, slidable vertically on the fi if ur t l 'i e r frame is fri l i e prfivision of means faces the uprights IP15 extending slightly outward at each end, presents a generally for shifting the negative frame horizontally and 45 vertically, the raising, lowering and cross moveright angular cross section its upper horizontal mo ments hem accom fished smoot without 10st forwardly reaching element constituting an elonmotion, with l accuracy gated saddle 19 having a substantially level sur- These and other valuable features are found in face Onthe finished rear s on which is e c s the novel construction and combination of parts t s b c ying rtar ed e of a slide 0 reac n s so hereinafter described and'illustrated in the acover and infrontof the saddle-g 1- 1 companying drawings, constituting a material M nted tr nsv r ly in h Slide n r s component of this disclosure, and in which: right-hand ,end, is a shaft 21 having fixed on its Figure 1 is a front elevational view of an emouter endja crank 22 for manual operation and at bodfment of the machinm a point near the inner. end of :the shaft is fixed Figure 2 is an end elevational view of the a spur pinion 23 meshed with a rack 24 secured no ber 48 on the opposite, thrust taking side.

on the saddle 19 to extend longitudinally the length required on the beam 18. I

Rigidly supported on the saddle l9 isan upright rectangular frame 25 held by bolts and located by adjustable dowels, this frame 25 carrying the negative frames, as will hereafter appear.

At the left hand of the slide 20, on its lowermost member, is bolted a lamp bracket support 2'7 extending downwardly and having a rear reaching. brace 28 at the end of which is a bar T29 having at its ends a'pair of rotatably mounted rolls 30 to impinge against a finished rail 31 on the downwardly reaching member of the beam 18.

At the front of the bracket 27 are spaced vertical bearings 32-32 suited to receive pivots for hingedly engagfirg a lamp support 33, on which a stop is mounted so that the lamp will always come back to the same position. 1 i

The beam 18 is held to finished guide flanges 85-35 on the outer sides of the uprights 15-15 by brackets 36-86 and 37-37, respectively upper and lower, slidable up and down by manual means, see Figures 3 and 4.

Bolted to the right hand end of the beaml8 is a bracket 38 providing spaced bearings 38-38 for a spindle 40'having keyed on it a spur pinion 41 and outwardly therebeyond a hand crank 42.

A toothed clutch disc 43 is slidably, but nonrotatably, mounted on the-spindle and provided with an annular groove 44 in its hub; the disc is engageable in an internally toothed recess 45 in the adjacent side of a mating clutch member in. the form of a wheel 46 freely rotatable on the spindle 40 land held from end movement thereonby a fixed collar 47 on one side and a keyed mem- Part of the circular face of the wheel 46 is provided with teeth to form a ratchet 49, the teeth being engageable by a pawl 50, pivoted at 51 in a forked plunger 52 slidable in a guide 53, and actuated by a screw 54, threaded into the plunger, the screw being rotatable in a fixed block 55, and provided with a hand knob 56 by which the ratchet may be finely adjusted, the screw being prevented from endwise movement and the plunger having a limiting stop.

Engaging the'periphery of the Wheel 48 is friction lining 57 fixed to a brake band 58, one end of which is secured to a-stud 59 set in the keyed member 48 and the other end to a collar 60 having a clearance hole to be freely slidable on a rod 61 and adjusted by a nut 62, the rod being carried by the member 48. I

Further in on the spindle 40 is keyed another wheel 65 partially encircled by abrake lining 66 riveted to a strap or brake band 67 fixed at one end to a stud 68 set in the bracket 38, and attached at the other end to a collar 69 fixed on a spindle 70 slidably mounted and pressed outwardly by a spring 71, normally relaxing the brake.

Slidably mounted on the outer portion ,gf the spindle 70 is a flanged collar 72 adjusted by a nut 73 screw-threaded on the outer end portion of the spindle, the enlarged lower portion of the collar being encircled by a compression, take-up spring 72'. I s

Pivotedly mounted on a stud 74 set in the bracket 38 is a lever handle '75 drawn normally toward the beam 18 by a coiled tension spring 76.

, The handle 75 has at a point opposite the pivot an arm-77 forked at its outer end to engage. the

reduced upper portion of the flanged collar 72 and actuate it against the effect of the take-up spring 72, setting the bands 66-67 against the brake wheel 65.

and fixed on the shaft 86 are spur gears 87-87 meshed with racks 88-88 secured to the front faces of the uprights 15-15.

From the foregoing it will be seen that upon actuation of the handle 42, the beam 18, and

all parts carried by it, including the brackets 36-37 and frame 25 may be moved up anddown in a vertical plane.

Qarried by the slidable brackets 36-36" are angular braces 89-89 supporting vertical bars 90-90 to which are attached the outer edges of curtains 91-91, their inner ends being engaged by spring actuated rolls 92-92 mounted in trunnions attached to the ends of the frame 25 and movable with it as the frame is moved lengthwise the apparatus.

A similar curtain roll 93 is carried by trunnions attached to the ends of the top beam 16,- the lower edge of a curtain 94 being attached to a cross bar 95 carried by offset supports 96-96 fixed, at their lower ends to the slidable brackets 36-36. 1

A lower curtain 97 is wound upon a roll 98 at its lower edge, its upper edge being attached to a cross bar 99 supported from the slidable brackets 36-36, both, upper and lower curtains extending completely across to shield the bed plate efrom light.

The frame 25 is provided with movable dowell devices 100 by which a negative holder 101 is located to carry a negative 102 provided with a,

means as indicated at 103-103" for'produeing a vacuum.

A bed plate holding frame 105 for carryi a sensitized blank, is provided with a cross bar 10 having a handle 107 at its center.

On the end members of the frame 105, near their upper ends, are outwardly projecting brackets 108-108 drilled to receive bolt bars 109-109, their inner ends being engageable in blocks 110-110 slidable in brackets 111-111 on the sides of the uprights 15-15.

- The inner ends of "the bolts 109-109 are formed with eyes receptive of pins set in the upper ends of levers 112-112 pivoted at 113- 113 to brackets extending in from the uprights, the lower ends of the levers being provided with operating handles 114-114.

The blocks 110-110 have extensions in which are set'rigid pins 116-116 seated in the forked upper ends of bell-crank lever arms 117-117 pivoted at 118-118 to bosses extending inwardly from the uprights 15-15.

The other, forwardly extending, arms 119-119 of the bell-crank levers are pivotally engaged to the upper ends of vertical bars 120-120 which are in turn pivoted to inreaching arms 121-121 .of corresponding bell-cranks fixed on a longiv125 fixed to the lower edge of the frame 105,

which has at its upper rear corners, right angled support bars 126-126, having braces 127-127, their lower ends being fixed to the frame end elemeQtS near their lower ends; the shaft 124 is encircled by torsional springs 128-128 having extending arms attached to the bed plate 105 to aid in raising andlowering the bed plate.

The shaft 122 is supported in brackets 130- 130 mounted on top'sof the base 17, these brackets carrying at their forked upper ends pins 131-131 on which are mounted slidable blocks 132-132 pinned to the shaft 124.

At a point near the right hand end of the shaft 122 is fixed a lever 135 having at its forwardly projecting end a link 136 in turn pivotedly connected to the outer end of a lever 137 fixed to a stub shaft 138 mounted in floor brackets 139.

Also fixed on the stub shaft'138 is an oscllating foot lever 140 having pedals 141-141 at each end by which the lever may be rocked in either direction, transmitting motion, through the link 136, to the shaft 122 and thence by the bell-crank levers, which operate in unison, to' move the frame 105 limitedly to the rear. Upon retracting the bolts 109-109 the frame 105 may be rotated on the axis of the shaft 124 until the supports 126-127 contact with the surface on which the machine rests.

Secured by brackets 142, carried by the upright 15, is an index bar 143 of alength equivalent to the distance that the cross beam 18 is capable of moving, this bar being preferably graduated in fractions of an-inch' and is readable in connection with a vernier plate 144 carried by the slide 36 closely adjacent by whch accurate adjustments may be made.

The bracket 36, is provided with bearings supporting the shaft 86 and its attached parts, over which is a guard cover 145 shielding the pinion 41 andgear 85.

A horizontal scale 148 is provided at the front I contiguous to the horizontal rack 24, the scale being of a length equal to the cross movement of the negative frame 25 and is readable in con-, nection with a vernier plate 149 carried on the saddle 19.

The saddle is moved by action of the crank actuated pinion 23 along-the rack for rough adjustment and for accurate 'final adjustment by rotating a knob 150 having a stem 151 bored to" receive a spindle 152 journalled in a raised lug 153 and pinned in the-stem 151.

A collar 154 on the spindle prevents it from moving lengthwise and the opposite end of the spindle is screw-threaded to engage a block 155 slidable on the frame 25 and ca ying a pivot 158 by which is attached a latch 157 having a tooth 158 suited to engage between any two adjacent teeth of the rack24.

This latch is held when in an engaged position by a bar 160 pivoted at 161 and provided at the front with an operating knob 162. I When this device has been used to obtain the fine adjustment required the bar 160 is turned outwardly allowing the latch to be raised from connection with the rack in an obvious manner.

In the modified form of brake device shown in Figure '11, a brake drum'1'65 is shown as keyed to the shaft 40 closelyadjacent the bearing 38', and provided with a lining 166 over which is a brake band 167. One end of this brake band is secured to a fixed element as 69, and the other to a block 168, actuated by arod 169, normally pqressed outwardly by a coiled compression-spring Adjustable on the rod169 is-a sleeve 171 controlled by a nut 172, this sleevehaving an annular groove to receive the forked element 173 of a lever 174, pivoted at 175, and normally drawn to relax the brake by a tension spring 176.

The foregoing is descriptive of the simplest form of the brake device for opposing the tendency of the weight of the negative frame, its saddle and the supporting beam 18 to drop by gravity, the action of the lever 174 serving to ease these elements as they are lowered.

In Figure 12 a brake wheel 180 is rotatably mounted on a shaft 40, and provided with a brake lining 181'and band 182 which may be stressed by the rod 183, as indicated also in Figure 13, the rod being normally pressed outward by an encircling coiled spring 184, the tension of which is adjusted by a nut 185 on its outer end.

the outer side of the fixed bearing 38".

Engageablewith the teeth of the gear 188 is apawl 192 pivoted at 1 93, in a manner substantially identical to the device shown in Figure 5, the pawl being provided with a raising pin 194 for manual operation.

I In the last described deviceit will be obvious 4 that when the ratchets 186-187 are in an engaged position, the pawl 192 may be applied to the ratchet 188 in order to prevent rotary movement of the shaft 40, quite similar to that obtainable in the device shown in Figure 4, but

somewhat less complicated in construction, and

it will be understood that the brake device is of a frictional character only. Referring to Figure 14, it will be seen that the brackets 36-36, which are rigidly carried by the ends of the beam18 and are slidably mounted on the finished edges 35-35 of the uprights 15-15-, have rigidly secured to-them upwardly extending racks 195 with which are engaged spur pinions 196 fixed on a shaft 197, this shaft also carrying at its outer end a spur gear 198, meshed with a-pinion 199 fixed on a spindle 200 and actuated by a crank handle 201, this device being ,of

similar character to that already described, except.

in the later case the axes of the shafts 197-200 arefixed'and not moved vertically as are the axes of the corresponding shafts 40-86, while the racks 195 ,move with the beam 18 in place of being rigidly secured to the faces-0f the uprights 15-15', this arrangement constituting a reversal of conditions and which may be preferable because of greater convenience in operation.

As changes of construction could be made within the scope of 'the invention, it is intended that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative andnot in a limiting sense.

Having thus described the invention, 'what is claimed as new and desired to secure by Letters Patent, is:-

1. In a photoprinting machine having uprights at its sides, a bed plate frame hingedly mounted at the rear, blocks carrying the elements of the frame hinges, fixed horizontal pins on which saidblocks are slidably mounted, manual means to lock said frame when in an operative position,

means for swinging said frame into a horizontal position when in an inoperative position.

2. In a photoprinting machine having a pair of uprights, a horizontal beam movable vertically on the faces of the uprights, a negative holder' slidable longitudinally on said beam, a bed plate frame pivoted at the rear of said uprights, suptically and horizontally thereover at the front,

a bed plate frame at the rear, releasable means to secure said frame when in a vertical position,

horizontally movable trunnions on which said frame is pivoted at its bottom whereby it may be turned into'a horizontal position, means to move said trunnions towards and from said holder, and means to support said frame when turned into a horizontal position.

4. In a'photoprinting machine having a pair of spaced uprights, slide blocks movable transversely thereon, a negative holder universally movable at the front, a bed plate frame at the rear, releasable means to bolt said frame to said blocks, means for moving said frame towards and from the uprights while parallel thereto, means for inclining said frame, and means for supporting the frame when horizontal.

5. In a photoprinting machine having a pair of spaced uprights, blocks slidable transversely therein, anegative holder universally movable at the front, a bed plate frame at the rear, releasable means to bolt said frame to said blocks, upper and lower pairs of bell-crank levers pivoted to said uprights having upwardly extending forked arms, pintles on said frame engaging the arms of said upper levers whereby the frame and blocks may be moved limitedly rearward, and means in the lower levers on which the frame may tiltoutwardly into a horizontal position.

6. In a photoprinting machine having a pair of spaced uprights, a negative holder universally movable at the front, a bed plate frame at the rear, releasable means to bolt said frame when upright, upper" and lower pairs of bell-crank levers pivoted to said uprights having upwardly extending forked arms, pintles on said frame engaged by the arms of the upper levers, pedally actuated means for rocking said levers inunison whereby said frame is moved back and forth when in a vertical position, means for tilting said frame in a horizontal position on the axes of the lower pintles, and means to support the frame when horizontal.

7. In a photographic machine having uprights, a horizontal beam vertically adjustable thereon, means for approximate and for exact adjustment of said beam, a negative frame carrying saddle slidable longitudinally on the beam, a'rack on said beam, a manually rotatable shaft journalled in said saddle having a gear engaging said rack for approximate adjustment, a latch having a detent engageable in said rack, a slide movable on said saddlein which said latch is pivoted,

manual means for adjusting said block relative to the saddle, a' scale -on said beam, and a vernier on said saddle by which the relative position of the saddle and frame may be exactly determined.

8. In aphotographic contact printing machine having a bed plate, means for moving a negative parallel to the face of the plate, and bell crank means at its four corners for moving the plate away from and towards the negative while retaining accurate relative position between the negative and the plate. a I

9. In a machine having upright supports provided with fixed racks, a beam movable reciprocatively on said supports, and provided with a slidable carriage, a block adjustable on saidcarriage, a shaft carried by said beam having gears meshed with said racks, a ratchet wheel on said shaft, a bracket fixed on said beam, a plunger slidable in said bracket tangentially of said wheel,

a pawl pivoted to said plunger engageable with said ratchet wheel, and a manually operable screw in said bracket to actuate said block whereby minute movements of the beam may be produced.

10. In a machine having a horizontal beam provided with .a slidable carriage, a rack on said beam, a block adjustable lengthwise said carriage, a lever pivoted in said block having a finger to engage the teeth of said rack, means to lock said lever when engaged with the rack, and manual means to adjust said block relative to the carriage.

11. In a machine having a, horizontal beam provided with'a slidable carriage, a rack on said beam, a block adjustable lengthwise said carriage, a lever pivoted in said block having a finger to engage the teeth of said rack, a latch to retain said finger in the spaces of said rack, and a manually operated screw on said carriage to adjust said block along the carriage.

12. In a machine having a pair of upright supports and a frame to oscillate in vertical planes therebetween, opposed inreaching' brackets on said supports carrying horizontally slidable blocks each having a bolt receiving opening, bell-crank levers pivoted on said supports and having their' upstanding arms engaged with said blocks, lever actuated bolts carried by said frame to engage 'the openings in said blocks, oscillatable support means for said frame, and connections between said support means'and the other arms of said bell-cranks whereby they are operated in unison.

13. In a machine having a pair of upright supports spacedly fixed on a base and a frame carried by said base between the supports, a shaft mounted in brackets on said base, said brackets being forked at their upper ends, pins fixed in the forks of said brackets, bell-crank levers pivoted on said shaft having forked upright arms, brackets on said frame having parts slidable on the pins of the first named brackets, pins in the frame brackets engaged in the forked arms of said bell-crank levers, connections between said supports and the upper portions of said frame permitting oscillative movement of the frame, and connecting means between the other arms of said bell-crank levers and said connections whereby said frame may be moved forwardly and rearwardly while in a vertical plane.

' 14. In a machine having a pair of upright supports spacedly fixed on a base and a frame carried by said base between the supports, pairs of brackets on the supports having horizontal slide blocks therein, bell-crank levers pivoted to said brackets to actuate' said blocks, other bellcrank levers on the base brackets operatively engaged with the lower portion of said frame, connections between said levers to cause simultaneous movement thereof, means to actuate said levers, brackets on said frame at its sides and bottom, said bottom brackets b'eing supported on the base brackets and connected to the corresponding bell-crank levers, said side brackets carrying bolts engageable in the blocks of I 7 1,959,789 I the brackets on said supports, and means for retracting said bolts whereby said frame may be turned at an angle on the bottom brackets.

15. In a machine having a pair of upright supports spacedly fixed on a base and a frame carried by said base between the supports, a shaft mounted in brackets on said base, said brackets being forked at their upper ends, pins fixed in the forks of said brackets, bell-crank levers pivoted on said shaft having forked upright arms, brackets on said frame having parts slidable on the pins of the first named brackets, pins in the frame brackets engaged in the forked arms of said bell-crank levers, releasable connections between said supports and said frame, manual means for engaging and disengaging said connections, and pedal means to cause a semi-rotation of said shaft whereby said frame may be moved reciprooatively in parallel planes.

16. In a machine having a pair of upright supports and a frame to oscillatein vertical planes therebetween, means for detachably engaging said frame to said supports, means for support-- ing said frame at its bottom whereby it may be turned at an angle when released at its sides, and means for moving said frame reciprocatively when in a vertical plane, said means being pedally actuated.

17. In a photomechanical machine of vertical type, a press plate supporting bed, a negative frame held parallel to said bed, and mechanical means of moving said press plate bed towards and from said negative frame while retaining parallel relationship between said bed andsaid negative frame.

18. In a'photomechanical machine of vertical type having uprights, a rigidly mounted bed for press plates therein, racks on said uprights, a negative frame, and means for adjusting said frame vertically, and means for moving said bed for press plate towards and from said negative frame while retaining parallel relationship between said bed and said negative frame.

19. In a photomechanical machine having up rights with a bed for press plate and a negative holding frame supported thereby, racks on said uprights and means for adjusting said negative holding frame vertically, and means for moving said bed for press plate towards and from said negative holding frame while retaining parallel relationship between said bed and said negative frame.

20. In a photomechanical machine having one set of uprights, a bedfor press plate and a negative holding frame supported by said uprights, racks on said uprights and means for moving said negative holding frame vertically, and

means for moving said bed for press plate to-,-

wards and from said negative holding frame while retaining parallel relationship between said bed and said negative frame. I

21. In a photomechanical machine having uprights, a bed for press plate and a negative holding frame supported by said uprights, means for moving said negative holding frame vertically and means for moving said bed for press plate toward and from said negative holding frame while retaining parallel relationship between said bed and said negative frame.

22. In a photomechanical machine having uprights, a bed for press plate and a negative holding frame attached to the same uprights, means for moving said bed for press plates toward and from said negative holding frame while retaining parallel relationship between said bed and said negative frame.

HARRY C. JONES. 

